Many teams already rely on Gmail for day-to-day communication, so connecting Gmail for bulk campaigns feels natural. MsgMars connects via OAuth so you never store passwords in plain text.

Gmail enforces daily sending limits that vary by account type. Personal accounts have lower caps than Google Workspace. Plan campaign volume accordingly and spread large sends across multiple days or connected accounts.

Warm up new sending patterns gradually. Sudden spikes in volume from a previously low-activity inbox can trigger spam filters. Start with smaller batches and increase over time.

Keep your contact list permission-based. Gmail and Google Workspace policies require that recipients have opted in. Purchased lists are a fast path to suspension.

Use templates with clear unsubscribe options and consistent branding. MsgMars template management keeps your messaging professional and repeatable across campaigns.

Monitor bounce rates and spam complaints in your campaign dashboard. High complaint rates signal content or targeting issues — fix them before your next send.