Best Email Encryption Software in 2026
Updated
In short: Lockbin is ranked #1 of 28 as of 2 October 2026, ahead of gpg4o and DataMotion Secure Email Exchange. The best-ranked option with a free plan is gpg4o. The lowest first paid tier on this page is Cryptshare.express at €0.42/mo.
When email contains sensitive information, encryption tools can add controls around delivery, recipients and access. Compared on secure delivery and recipient verification, the options also let you weigh attachment limits, message expiry and admin access controls. Gmail and Outlook integration can matter if either service is part of your workflow. Free-plan availability and paid-from pricing help put the capabilities in a cost context. Lockbin, gpg4o and DataMotion Secure Email Exchange are among the options to compare. Consider how messages need to reach recipients and what controls you require, then assess the listed features against your email workflow.
28 email encryption software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
28ranked
5free plans on this page
€0.42/molowest paid tier
2 Oct 2026last checked
Input list Email Encryption Software 25 channels on this page · 116 of 200 spec lines stated by the makers
Ch Tool Free planPaid fromSecure deliveryRecipient verificationMessage expiryAttachment limitOutlook integrationGmail integration Spec sheet Score
01 Lockbin Free planYesPaid from10/user/moSecure deliverylinkRecipient verificationpasswordMessage expiryYesAttachment limit100 MBOutlook integrationNoGmail integrationNo 8/8spec lines stated 7.8
02 gpg4o Free planYesPaid fromnot statedSecure deliveryattachmentRecipient verificationidentityMessage expiryNoAttachment limitnot statedOutlook integrationYesGmail integrationNo 6/8spec lines stated 7.3
03 DataMotion Secure Email Exchange Free planYesPaid fromnot statedSecure deliveryportalRecipient verificationidentityMessage expiryYesAttachment limit50 MBOutlook integrationYesGmail integrationYes 7/8spec lines stated 7.2
04 Proofpoint Email DLP and Encryption Free plannot statedPaid fromnot statedSecure deliveryportalRecipient verificationnot statedMessage expiryYesAttachment limitnot statedOutlook integrationYesGmail integrationnot stated 3/8spec lines stated 7.1
05 MailHippo Free planNoPaid from4.95/user/moSecure deliveryportalRecipient verificationpasswordMessage expiryYesAttachment limit50 MBOutlook integrationYesGmail integrationYes 8/8spec lines stated 7.0
06 SecureMyEmail Free planYesPaid fromnot statedSecure deliverynot statedRecipient verificationnot statedMessage expirynot statedAttachment limitnot statedOutlook integrationnot statedGmail integrationnot stated 1/8spec lines stated 7.0
07 Mailvelope Free planYesPaid fromnot statedSecure deliveryattachmentRecipient verificationidentityMessage expirynot statedAttachment limit50 MBOutlook integrationYesGmail integrationYes 6/8spec lines stated 6.9
08 Virtru Email Encryption Free planNoPaid fromnot statedSecure deliverylinkRecipient verificationidentityMessage expiryYesAttachment limit150 MBOutlook integrationYesGmail integrationYes 7/8spec lines stated 6.9
09 c.Email Free planYesPaid fromnot statedSecure deliverynot statedRecipient verificationnot statedMessage expirynot statedAttachment limitnot statedOutlook integrationnot statedGmail integrationnot stated 1/8spec lines stated 6.8
10 FlowCrypt Free planYesPaid fromnot statedSecure deliverylinkRecipient verificationpasswordMessage expiryYesAttachment limit25 MBOutlook integrationYesGmail integrationYes 7/8spec lines stated 6.8
11 RMail Free plannot statedPaid fromnot statedSecure deliveryattachmentRecipient verificationpasswordMessage expiryYesAttachment limit10 MBOutlook integrationYesGmail integrationYes 6/8spec lines stated 6.7
12 Encryptomatic OpenPGP Free planYesPaid fromnot statedSecure deliverynot statedRecipient verificationnot statedMessage expirynot statedAttachment limitnot statedOutlook integrationYesGmail integrationnot stated 2/8spec lines stated 6.6
13 Mimecast Secure Messaging Free plannot statedPaid fromnot statedSecure deliveryportalRecipient verificationnot statedMessage expiryYesAttachment limitnot statedOutlook integrationYesGmail integrationnot stated 3/8spec lines stated 6.5
14 OpenText Core Email Message Privacy Free plannot statedPaid fromnot statedSecure deliverylinkRecipient verificationpasswordMessage expiryYesAttachment limitnot statedOutlook integrationYesGmail integrationnot stated 4/8spec lines stated 6.5
15 Virtru Data Security Platform Free planNoPaid fromnot statedSecure deliverynot statedRecipient verificationnot statedMessage expirynot statedAttachment limitnot statedOutlook integrationnot statedGmail integrationnot stated 1/8spec lines stated 6.5
16 Gpg4win Free planYesPaid fromnot statedSecure deliveryattachmentRecipient verificationidentityMessage expirynot statedAttachment limitnot statedOutlook integrationYesGmail integrationnot stated 4/8spec lines stated 6.4
17 PDF Postman Free planYesPaid fromnot statedSecure deliveryattachmentRecipient verificationpasswordMessage expirynot statedAttachment limitnot statedOutlook integrationYesGmail integrationnot stated 4/8spec lines stated 6.4
18 Secure Message Free planYesPaid fromnot statedSecure deliverylinkRecipient verificationnot statedMessage expiryYesAttachment limitnot statedOutlook integrationnot statedGmail integrationnot stated 3/8spec lines stated 6.3
19 Send It Secure Free planYesPaid fromnot statedSecure deliveryportalRecipient verificationidentityMessage expiryYesAttachment limit50 MBOutlook integrationYesGmail integrationNo 7/8spec lines stated 6.3
20 Paubox Email Encryption Free planNoPaid fromnot statedSecure deliverylinkRecipient verificationpasswordMessage expiryNoAttachment limit150 MBOutlook integrationYesGmail integrationYes 7/8spec lines stated 6.2
21 Cryptshare.express Free planNoPaid fromnot statedSecure deliveryportalRecipient verificationpasswordMessage expiryYesAttachment limit10,240 MBOutlook integrationYesGmail integrationNo 7/8spec lines stated 6.1
22 KnowBe4 Free planNoPaid from2.4/user/moSecure deliverynot statedRecipient verificationnot statedMessage expirynot statedAttachment limitnot statedOutlook integrationnot statedGmail integrationnot stated 2/8spec lines stated 6.0
23 Sophos Secure Message Free plannot statedPaid fromnot statedSecure deliverynot statedRecipient verificationpasswordMessage expiryYesAttachment limitnot statedOutlook integrationYesGmail integrationNo 4/8spec lines stated 6.0
24 Symantec IT Management Suite Free plannot statedPaid fromnot statedSecure deliverynot statedRecipient verificationpasswordMessage expiryYesAttachment limitnot statedOutlook integrationnot statedGmail integrationnot stated 2/8spec lines stated 6.0
25 Trustifi Outbound Shield Free planNoPaid fromnot statedSecure deliverylinkRecipient verificationpasswordMessage expiryYesAttachment limitnot statedOutlook integrationYesGmail integrationYes 6/8spec lines stated 6.0
Compare all 25 in a table
| # | Tool | Score | Free plan | From | Free plan | Paid from | Secure delivery | Recipient verification |
|---|---|---|---|---|---|---|---|---|
| 1 | Lockbin | 7.8 | Free plan | $10/mo | Yes | 10 /user/mo | link | password |
| 2 | gpg4o | 7.3 | Free plan | €99.95/mo | Yes | — | attachment | identity |
| 3 | DataMotion Secure Email Exchange | 7.2 | No | — | Yes | — | portal | identity |
| 4 | Proofpoint Email DLP and Encryption | 7.1 | No | — | — | — | portal | — |
| 5 | MailHippo | 7.0 | No | $4.95/mo | No | 4.95 /user/mo | portal | password |
| 6 | SecureMyEmail | 7.0 | Free plan | Free | Yes | — | — | — |
| 7 | Mailvelope | 6.9 | No | €3/mo | Yes | — | attachment | identity |
| 8 | Virtru Email Encryption | 6.9 | No | $119/mo | No | — | link | identity |
| 9 | c.Email | 6.8 | Free plan | Free | Yes | — | — | — |
| 10 | FlowCrypt | 6.8 | Free plan | Free | Yes | — | link | password |
| 11 | RMail | 6.7 | No | — | — | — | attachment | password |
| 12 | Encryptomatic OpenPGP | 6.6 | No | $2.50/mo | Yes | — | — | — |
| 13 | Mimecast Secure Messaging | 6.5 | No | — | — | — | portal | — |
| 14 | OpenText Core Email Message Privacy | 6.5 | No | — | — | — | link | password |
| 15 | Virtru Data Security Platform | 6.5 | No | $119/mo | No | — | — | — |
| 16 | Gpg4win | 6.4 | No | — | Yes | — | attachment | identity |
| 17 | PDF Postman | 6.4 | No | $79.99/mo | Yes | — | attachment | password |
| 18 | Secure Message | 6.3 | No | — | Yes | — | link | — |
| 19 | Send It Secure | 6.3 | No | — | Yes | — | portal | identity |
| 20 | Paubox Email Encryption | 6.2 | No | $29/mo | No | — | link | password |
| 21 | Cryptshare.express | 6.1 | No | €0.42/mo | No | — | portal | password |
| 22 | KnowBe4 | 6.0 | No | $2.40/mo | No | 2.4 /user/mo | — | — |
| 23 | Sophos Secure Message | 6.0 | No | — | — | — | — | password |
| 24 | Symantec IT Management Suite | 6.0 | No | — | — | — | — | password |
| 25 | Trustifi Outbound Shield | 6.0 | No | — | No | — | link | password |
Is your tool on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which email encryption software is ranked first on Specifiction?
Lockbin is ranked #1 of 28 with a score of 7.8. gpg4o is second and DataMotion Secure Email Exchange third.
How many of these have a free plan?
5 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Cryptshare.express has the lowest first paid tier we found: €0.42/mo.
How is this list ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.