GridInbox vs SimpleLogin

GridInbox is a shared email workspace for handling customer conversations sent to business addresses such as support@, sales@, and billing@. Team members can assign conversations, see who is handling them, and send or reply from the address where a message arrived. Its REST API can create and delete aliases, read messages, and send email programmatically. GridInbox also extracts one-time passwords and verification codes from incoming email for access through its dashboard or API. The Free plan costs nothing and includes five aliases, 10 outbound and 50 inbound messages per month, 512MB of storage, a 5 MiB attachment limit, and REST API access. Pro costs $19 a month and includes unlimited aliases, OTP extraction, 5GB storage, and up to three custom domains. Team costs $99 a month and includes five seats with role-based access control and up to 10 custom domains. GridInbox is designed for transactional and operational email; bulk marketing email is prohibited. It runs on the web and offers API access.

SimpleLogin creates email aliases that forward messages to a mailbox while keeping a user's real address hidden. Users can reply to messages or send mail from an alias. Aliases can be created with a subdomain or catch-all domain, and users can bring their own domain. With PGP enabled, messages are encrypted with the user's PGP key before forwarding. Accounts support TOTP and/or WebAuthn two-factor authentication. SimpleLogin says its components are open source and can be self-hosted. It lists Chrome, Firefox, and Safari extensions, plus iOS and Android apps, including Android through F-Droid. The Free plan costs nothing and includes 10 aliases, one mailbox, and unlimited bandwidth; users cannot create more aliases after reaching the cap. Premium costs $36/year or $4 billed monthly, and includes unlimited aliases, custom domains, and mailboxes, plus PGP encryption. Free and Premium plans include the corresponding Proton Pass features. SimpleLogin says it joined Proton in early 2022.