size limit

Mailpro’s SMTP relay accepts messages up to 20 MB total, including the email body, headers and all attachments after Base64 encoding...

Yes — and the limit that hurts most isn't from your ESP, it's from Gmail clipping at 102 KB of...

Mailpro does not enforce a rigid daily cap. Sending volume depends on your plan and your monthly credit quota. Pro tip:...

There is no hard cap on the number of automations you can run, the number of steps in a single...

Mailpro's drag-and-drop editor resizes your images in just a few clicks — no external software needed. Pro tip: keep each image...

Mailpro is built to scale — from your first 100 contacts to a million-strong list with daily transactional volume. The...

SMTP error 552 means the destination has refused the message because it exceeded a storage or size limit. Two distinct...

Mailpro does not sell a separate "automation plan" with unlimited workflows — because it does not need one. Building and...

The Mailpro Builder accepts a wide range of file types for images, attachments and downloadable resources. Each type has a...

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